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1 # 2001 September 15 | |
2 # | |
3 # The author disclaims copyright to this source code. In place of | |
4 # a legal notice, here is a blessing: | |
5 # | |
6 # May you do good and not evil. | |
7 # May you find forgiveness for yourself and forgive others. | |
8 # May you share freely, never taking more than you give. | |
9 # | |
10 #*********************************************************************** | |
11 # This file implements regression tests for SQLite library. The | |
12 # focus of this file is testing the SELECT statement. | |
13 # | |
14 # $Id: select2.test,v 1.28 2009/01/15 15:23:59 drh Exp $ | |
15 | |
16 set testdir [file dirname $argv0] | |
17 source $testdir/tester.tcl | |
18 | |
19 # Create a table with some data | |
20 # | |
21 execsql {CREATE TABLE tbl1(f1 int, f2 int)} | |
22 execsql {BEGIN} | |
23 for {set i 0} {$i<=30} {incr i} { | |
24 execsql "INSERT INTO tbl1 VALUES([expr {$i%9}],[expr {$i%10}])" | |
25 } | |
26 execsql {COMMIT} | |
27 | |
28 # Do a second query inside a first. | |
29 # | |
30 do_test select2-1.1 { | |
31 set sql {SELECT DISTINCT f1 FROM tbl1 ORDER BY f1} | |
32 set r {} | |
33 catch {unset data} | |
34 db eval $sql data { | |
35 set f1 $data(f1) | |
36 lappend r $f1: | |
37 set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2" | |
38 db eval $sql2 d2 { | |
39 lappend r $d2(f2) | |
40 } | |
41 } | |
42 set r | |
43 } {0: 0 7 8 9 1: 0 1 8 9 2: 0 1 2 9 3: 0 1 2 3 4: 2 3 4 5: 3 4 5 6: 4 5 6 7: 5 6
7 8: 6 7 8} | |
44 | |
45 do_test select2-1.2 { | |
46 set sql {SELECT DISTINCT f1 FROM tbl1 WHERE f1>3 AND f1<5} | |
47 set r {} | |
48 db eval $sql data { | |
49 set f1 $data(f1) | |
50 lappend r $f1: | |
51 set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2" | |
52 db eval $sql2 d2 { | |
53 lappend r $d2(f2) | |
54 } | |
55 } | |
56 set r | |
57 } {4: 2 3 4} | |
58 unset data | |
59 | |
60 # Create a largish table. Do this twice, once using the TCL cache and once | |
61 # without. Compare the performance to make sure things go faster with the | |
62 # cache turned on. | |
63 # | |
64 ifcapable tclvar { | |
65 do_test select2-2.0.1 { | |
66 set t1 [time { | |
67 execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int); BEGIN;} | |
68 for {set i 1} {$i<=30000} {incr i} { | |
69 set i2 [expr {$i*2}] | |
70 set i3 [expr {$i*3}] | |
71 db eval {INSERT INTO tbl2 VALUES($i,$i2,$i3)} | |
72 } | |
73 execsql {COMMIT} | |
74 }] | |
75 list | |
76 } {} | |
77 puts "time with cache: $::t1" | |
78 } | |
79 catch {execsql {DROP TABLE tbl2}} | |
80 do_test select2-2.0.2 { | |
81 set t2 [time { | |
82 execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int); BEGIN;} | |
83 for {set i 1} {$i<=30000} {incr i} { | |
84 set i2 [expr {$i*2}] | |
85 set i3 [expr {$i*3}] | |
86 execsql "INSERT INTO tbl2 VALUES($i,$i2,$i3)" | |
87 } | |
88 execsql {COMMIT} | |
89 }] | |
90 list | |
91 } {} | |
92 puts "time without cache: $t2" | |
93 #ifcapable tclvar { | |
94 # do_test select2-2.0.3 { | |
95 # expr {[lindex $t1 0]<[lindex $t2 0]} | |
96 # } 1 | |
97 #} | |
98 | |
99 do_test select2-2.1 { | |
100 execsql {SELECT count(*) FROM tbl2} | |
101 } {30000} | |
102 do_test select2-2.2 { | |
103 execsql {SELECT count(*) FROM tbl2 WHERE f2>1000} | |
104 } {29500} | |
105 | |
106 do_test select2-3.1 { | |
107 execsql {SELECT f1 FROM tbl2 WHERE 1000=f2} | |
108 } {500} | |
109 | |
110 do_test select2-3.2a { | |
111 execsql {CREATE INDEX idx1 ON tbl2(f2)} | |
112 } {} | |
113 do_test select2-3.2b { | |
114 execsql {SELECT f1 FROM tbl2 WHERE 1000=f2} | |
115 } {500} | |
116 do_test select2-3.2c { | |
117 execsql {SELECT f1 FROM tbl2 WHERE f2=1000} | |
118 } {500} | |
119 do_test select2-3.2d { | |
120 set sqlite_search_count 0 | |
121 execsql {SELECT * FROM tbl2 WHERE 1000=f2} | |
122 set sqlite_search_count | |
123 } {3} | |
124 do_test select2-3.2e { | |
125 set sqlite_search_count 0 | |
126 execsql {SELECT * FROM tbl2 WHERE f2=1000} | |
127 set sqlite_search_count | |
128 } {3} | |
129 | |
130 # Make sure queries run faster with an index than without | |
131 # | |
132 do_test select2-3.3 { | |
133 execsql {DROP INDEX idx1} | |
134 set sqlite_search_count 0 | |
135 execsql {SELECT f1 FROM tbl2 WHERE f2==2000} | |
136 set sqlite_search_count | |
137 } {29999} | |
138 | |
139 # Make sure we can optimize functions in the WHERE clause that | |
140 # use fields from two or more different table. (Bug #6) | |
141 # | |
142 do_test select2-4.1 { | |
143 execsql { | |
144 CREATE TABLE aa(a); | |
145 CREATE TABLE bb(b); | |
146 INSERT INTO aa VALUES(1); | |
147 INSERT INTO aa VALUES(3); | |
148 INSERT INTO bb VALUES(2); | |
149 INSERT INTO bb VALUES(4); | |
150 SELECT * FROM aa, bb WHERE max(a,b)>2; | |
151 } | |
152 } {1 4 3 2 3 4} | |
153 do_test select2-4.2 { | |
154 execsql { | |
155 INSERT INTO bb VALUES(0); | |
156 SELECT * FROM aa CROSS JOIN bb WHERE b; | |
157 } | |
158 } {1 2 1 4 3 2 3 4} | |
159 do_test select2-4.3 { | |
160 execsql { | |
161 SELECT * FROM aa CROSS JOIN bb WHERE NOT b; | |
162 } | |
163 } {1 0 3 0} | |
164 do_test select2-4.4 { | |
165 execsql { | |
166 SELECT * FROM aa, bb WHERE min(a,b); | |
167 } | |
168 } {1 2 1 4 3 2 3 4} | |
169 do_test select2-4.5 { | |
170 execsql { | |
171 SELECT * FROM aa, bb WHERE NOT min(a,b); | |
172 } | |
173 } {1 0 3 0} | |
174 do_test select2-4.6 { | |
175 execsql { | |
176 SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 1 END; | |
177 } | |
178 } {1 2 3 4} | |
179 do_test select2-4.7 { | |
180 execsql { | |
181 SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 0 ELSE 1 END; | |
182 } | |
183 } {1 4 1 0 3 2 3 0} | |
184 | |
185 finish_test | |
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